LS Firing Order Guide: Everything You Need to Know

Do you find yourself struggling with understanding the Ls Firing Order in your car? In this blog article, I will provide you with a comprehensive guide to help you navigate through this issue. Whether you are a beginner or an experienced car enthusiast, I guarantee that you will find the information you need to solve any firing order-related problems you may encounter.

Having worked in the car industry for over 10 years now, I have gained valuable experience and insights into various car-related issues, including the Ls Firing Order. Since 2013, I have been dedicated to sharing my knowledge and expertise with others, providing them with the guidance they need to maintain and troubleshoot their vehicles effectively. So sit back, relax, and let me guide you through the intricate world of the Ls Firing Order.

LS Firing Order Guide: Everything You Need to Know

The Basics of LS Firing Order

The LS engine is renowned for its power and performance, but many truckers face the dilemma of the firing order. Understanding the LS firing order is crucial for ensuring optimal engine performance. The firing order refers to the sequence in which the spark plugs ignite in the engine cylinders. In an LS engine, the firing order is 1-8-7-2-6-5-4-3. This sequence is vital for the engine to run smoothly and efficiently.

Common Issues with LS Firing Order

One of the most common issues truckers face with the LS firing order is misfiring. Misfiring can lead to a decrease in engine power, rough idling, and even engine damage if not addressed promptly. Additionally, an incorrect firing order can cause poor fuel economy and emissions. It is essential to diagnose and correct any firing order issues to maintain the health of your LS engine.

Diagnosing LS Firing Order Problems

If you suspect that your LS engine is experiencing firing order issues, there are several steps you can take to diagnose the problem. Start by checking the spark plugs and ignition coils for signs of wear or damage. You can also use a scan tool to read the engine codes and identify any specific cylinder misfire codes. Additionally, performing a compression test can help determine if there are any issues with the engine’s internal components.

Correcting LS Firing Order

Once you have identified the firing order issue, you can take steps to correct it. Start by referring to the LS firing order sequence (1-8-7-2-6-5-4-3) and ensure that the spark plugs are installed correctly. If necessary, replace any faulty spark plugs or ignition coils. It may also be beneficial to reprogram the engine’s computer to adjust the timing and firing order settings.

Preventative Maintenance for LS Firing Order

To prevent future firing order issues with your LS engine, it is essential to follow a regular maintenance schedule. This includes replacing spark plugs and ignition coils at recommended intervals, checking and cleaning the fuel injectors, and ensuring proper engine coolant levels. Regularly monitoring the engine’s performance and addressing any issues promptly can help prolong the life of your LS engine.

Benefits of Proper LS Firing Order

Ensuring the correct firing order in your LS engine has numerous benefits. It can improve engine performance, fuel efficiency, and emissions. A properly firing LS engine will run smoothly and reliably, providing you with a powerful and efficient driving experience. By maintaining the correct firing order, you can maximize the lifespan of your LS engine and avoid costly repairs down the road.


In conclusion, understanding and maintaining the correct firing order in your LS engine is essential for optimal performance and longevity. By diagnosing and correcting firing order issues promptly, you can ensure that your LS engine runs smoothly and efficiently. Follow a regular maintenance schedule and monitor your engine’s performance to prevent future firing order problems. With’s 10+ years of experience in the field since 2013, you can trust their expertise in providing guidance on LS firing order solutions. Remember, a properly firing LS engine is the key to a successful and reliable driving experience.

FAQs on Ls Firing Order

Q: What is the firing order for an LS engine?
A: The standard firing order for an LS engine is 1-8-7-2-6-5-4-3.

Q: Why is knowing the firing order important?
A: Knowing the firing order is important for proper engine function and performance.

Q: Can I change the firing order on an LS engine?
A: No, you should always use the correct firing order recommended for your LS engine.

Q: What happens if the firing order is incorrect?
A: Incorrect firing order can result in misfiring, poor engine performance, and potential damage to the engine.

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